of a whole army, which will have to go out and fight with the invaders for all that we have, as well as for the things and persons whom we were describing above.

Why? he said; are they not capable of defending themselves?

No, I said; not if we were right in the principle which was acknowledged by all of us when we were framing the State: the principle, as you will remember, was that one man cannot practise many arts with success.

Very true, he said.

But is not war an art?

Certainly.

And an art requiring as much attention as shoemaking?

Quite true.

And the shoemaker was not allowed by us to be a husbandman, or a weaver, or a builder —